<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="app">
<h1 v-if="show">11111111</h1>
<h1 v-if="!show">22222222</h1>
</div>
</body>
<script src="vue.js"></script>
<script>
    var vm = new Vue({
        el:'#app',
        data:{
            show:false
        }
    })
</script>
</html>